Other
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9818l&link_type=abstract
HST Proposal ID #9818
Other
Hst Proposal Id #9818 Agn/Quasars
Scientific paper
We propose to make a short UV and optical reverberation mapping monitoring of NGC 4395, by far the least luminous Seyfert 1 galaxy known {M_B -10}, where the Broad Line Region {BLR} is most likely between a fraction of a light hour to a few light hours across. This program will: 1. extend by a factor of 100 the range of R_BLR probed by RM, 2. allow to test models for AGN continuum emission and BLR structure at very low L and M_BH. 3. provide significantly more reliable estimates of its M_BH than currently available, 4. allow to probe the M_BH-sigma_* relation in AGN at very low M_BH, which cannot be probed by other methods. Existing archival FOS observations indicate significant {up to 30-40%} line and continuum variations within one orbit, suggesting that the proposed RM is likely to succeed. The unusually small R_BLR in NGC 4395 implies that RM can be performed here at only a fraction of the cost required in typical AGN.
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